*{
	margin: 0;
	padding: 0;
	box-sizing: border-box;
}
ol,ul{
	list-style: none;
}
img{
	border: none;
	vertical-align: bottom;
}
a{
	text-decoration: none;
}
html,body{
	width: 100%;
	height: 100%;
	
}
body{
	background-color: #f6f6f6;
}

.teacher{
	width: 1182px;
	height: 70px;
	margin: 0 auto;
	display: flex;
	align-items: ceneter;
	margin: 20px auto;
	background-color: #FFFFFF;
}
.teacher  span{
	display: block;
	width: 140px;
	height: 28px;
	line-height: 28px;
	text-align: right;
	font-size: 14px;
	margin-top: 20px;
	margin-left: 20px;
	background: url(../img/未标题-1.gif) no-repeat left center;
}
.teacher span a{
	color: #303133;
}

.banner{
	width: 1182px;
	height: 710px;
	display: flex;
	background-color: #F6F6F6;
	margin: 0 auto;
	margin-bottom: 50px;
}
.banner ul{
	width: 1182px;
	height: 710px;
	display: flex;
	align-content: space-between;
	justify-content: space-between;
	flex-wrap: wrap;
}
.banner ul li{
	width: 280px;
	height: 345px;
	text-align: center;
	background: #FFFFFF;
	position: relative;
}
.banner ul li i{
	width: 280px;
	height: 345px;
	display: block;
	font-style: normal;
	position: absolute;
	background: black;
	top: 0;
	display: none;
	padding: 39px 20px;
	font-size: 14px;
	color: #ebebeb;
}
.banner ul li h1{
	height: 55px;
	line-height: 55px;
	font-size: 15px;
}
.banner ul li img{
	margin-top: 40px;
	border-radius: 10px;
}
.banner ul li p{
	font-size: 12px;
	color: #909399;
}
.banner ul li:nth-child(6){
	transform: translateX(-150px);
}
.banner ul li:nth-child(7){
	transform: translateX(-300px);
}
.banner ul li:hover i{
	display: block;
	opacity: 0.7;
}


footer{
	width: 100%;
	height: 60px;
	background: #242a39;
}
footer .foot{
	width: 1182px;
	height: 60px;
	margin: 0 auto;
	text-align: center;
	line-height: 60px;
}
footer .foot span{
	margin-right: 15px;
	font-size: 14px;
	color: #999999;
}
footer .foot span:nth-child(2){
	color: #c0c4cc;
}
footer .foot a{
	font-size: 14px;
	color: #FFFFFF;
}